Apply fixes from clag-tidy misc-unused-parameters (#1293)

Summary:
Pull Request resolved: https://github.com/facebook/yoga/pull/1293

X-link: https://github.com/facebook/react-native/pull/37384

Gets the project mostly clean of `-Wunused-parameter`, part of `-Wextra`.

Reviewed By: yungsters

Differential Revision: D45772554

fbshipit-source-id: 14a146a777c0122c7d390797532d5b386203e5d9

tests/YGLoggerTest.cpp

@@ -14,9 +14,9 @@
 namespace {
 char writeBuffer[4096];
 int _unmanagedLogger(
-    const YGConfigRef config,
-    const YGNodeRef node,
-    YGLogLevel level,
+    const YGConfigRef /*config*/,
+    const YGNodeRef /*node*/,
+    YGLogLevel /*level*/,
     const char* format,
     va_list args) {
   return vsnprintf(